CN102324578A - Manufacturing method of long-life nickel-hydrogen battery - Google Patents
Manufacturing method of long-life nickel-hydrogen battery Download PDFInfo
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- CN102324578A CN102324578A CN201110258245A CN201110258245A CN102324578A CN 102324578 A CN102324578 A CN 102324578A CN 201110258245 A CN201110258245 A CN 201110258245A CN 201110258245 A CN201110258245 A CN 201110258245A CN 102324578 A CN102324578 A CN 102324578A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Abstract
The invention discloses a manufacturing method of a long-life nickel-hydrogen battery; the method comprises: a cathode manufacturing step, an anode manufacturing step, a diaphragm rolling step, an electrolyte injecting step, and a sealing step; the cathode manufacturing step comprises the following substeps of: cathode material preparation, cathode material coating, and cathode tabletting; the anode manufacturing step comprises the following substeps of: anode material coating, and anode tabletting; the electrolyte injecting step comprises the following substeps of: electrolyte preparation, and electrolyte injection. According to the method of the invention, by increasing the lengths of the cathode sheet and the anode sheet and adjusting the amount of the cathode and anode materials, the charge and discharge efficiency of the activation process of the nickel-hydrogen battery is promoted, and the improvement of the service life is facilitated; the using amount of the electrolyte is increased, and thus the charge and discharge efficiency is increased by increasing conductive substances, which also facilitates the improvement of the service life of the nickel-hydrogen battery. The method of the invention has simple process, and low cost, and can greatly increase the service life of the nickel-hydrogen battery.
Description
Technical field
The present invention relates to a kind of manufacture method of Ni-MH battery, more specifically, relate to a kind of manufacture method of long-life Ni-MH battery.
Background technology
Along with the high speed development of electronic product, portable electronics mobile device is widely used.Follow the popularization of electronics mobile device, demand low to the environmental pollution of using in it, the Ni-MH battery that can repeatedly recycle is also increasing; Except the demand to the Ni-MH battery capacity uprises, to also having proposed higher requirement in useful life of Ni-MH battery.But in the prior art be with the hickelous nydroxide positive electrode and potassium hydroxide be the middle high power capacity made of bath composition Ni-MH battery in use capacity reduce obviously; The number of times that can be recycled is limited; Be difficult to satisfy present people to the demand of Ni-MH battery long life, limit it and further promote and use.
Summary of the invention
The technical problem that the present invention will solve is; To the Ni-MH battery of high power capacity in the prior art in use the capacity number of times that reduces obviously, can be recycled limited, be difficult to satisfy the problem of people to the demand of Ni-MH battery long life, the manufacture method of the long-life Ni-MH battery that a kind of technology is simple and cost is low is provided.
The technical problem that the present invention solves realizes through following technical scheme: a kind of manufacture method of long-life Ni-MH battery is provided, comprises that anodal making step, negative pole making step, barrier film roll step, electrolyte implantation step and sealing step, wherein,
Said anodal making step comprises following substep:
A1: positive electrode preparation: positive electrode active materials, additive and binding agent are mixed, make positive electrode;
A2: positive electrode coating: the positive electrode that makes among the step a1 is uniformly coated on the anodal matrix;
A3: anodal compressing tablet: be coated with the anodal matrix of positive electrode among the pressing step a2, made positive plate;
Said negative pole making step comprises following substep:
B1: negative material coating: negative material is uniformly coated on the negative pole matrix;
B2: negative pole compressing tablet: be coated with the negative pole matrix of negative material among the pressing step b1, made negative plate;
Said electrolyte implantation step comprises following substep:
C1: electrolyte quota: alkaline electrolyte is dissolved in the solvent, makes electrolyte;
C2: electrolyte injects: the electrolyte that step c1 is made injects in the shell.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step a1, said positive electrode active materials is for covering the inferior nickel of cobalt, and said additive is the oxide or the hydroxide of calcium constituent or yttrium, and said binding agent is a polytetrafluoroethylene.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step a1, the parts by weight of said positive electrode active materials, additive and binding agent are respectively 80-98,1-5 and 2-4.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step a2, said anodal matrix is foaming nickel.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step a3, the length of said positive plate is 110-115mm, and the width of said positive plate is 44-45mm, and the thickness of said positive plate is 0.65-0.7mm.
In the manufacture method of above-mentioned long-life Ni-MH battery, said negative pole making step comprises following substep:
B1: negative material coating: alloyed powder is uniformly coated on the Niclad;
B2: negative pole compressing tablet: be coated with the Niclad of alloyed powder among the pressing step b1, made negative plate.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step b2, the length of said negative plate is 140-150mm, and the width of said negative plate is 44-45mm, and the thickness of said negative plate is 0.25-0.3mm.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step c1, said alkaline electrolyte is the mixture of NaOH, potassium hydroxide and monohydrate lithium hydroxide; Said solvent is distilled water or membrane filtration pure water.
In the manufacture method of above-mentioned long-life Ni-MH battery; In said step c1; The NaOH, potassium hydroxide and the monohydrate lithium hydroxide that parts by weight are respectively 15-25,10-20 and 1-5 are dissolved in the distilled water or membrane filtration pure water that parts by weight are 70-100, make electrolyte.
In the manufacture method of above-mentioned long-life Ni-MH battery, in said step c1, the consumption of electrolyte is 2.6-2.8g.
The manufacture method of the long-life Ni-MH battery of embodiment of the present invention can obtain following beneficial effect: positive electrode prepares selects special positive electrode active materials for use in the process, improves the content of cobalt in the positive electrode, and then the useful life of improving Ni-MH battery; The length of lengthening positive plate and negative plate, and control the thickness of positive and negative plate respectively through the consumption of adjusting positive electrode and negative material, can promote the efficiency for charge-discharge of Ni-MH battery activation process, help the improvement in its useful life; In addition, negative plate is bigger to the influence in useful life of Ni-MH battery, under the situation of positive plate lengthening, increases the consumption of negative material, improves the assembling ratio of Ni-MH battery, can prolong its useful life; Thereby the consumption that raises electrolyte increases the conductive materials in the nickel-hydrogen cell charging and discharging process, the useful life that efficiency for charge-discharge improves and helps to improve Ni-MH battery.Method technology of the present invention is simple, cost is low, and can increase substantially the useful life of Ni-MH battery.
Embodiment
Below will do further explain to the present invention through specific embodiment.
The conventional Ni-MH battery of embodiment 1:AA2200
The conventional Ni-MH battery of AA2200 belongs to middle high-capacity battery.Select for use gold sky, Hunan to cover the inferior nickel of cobalt as positive electrode active materials; Select for use 110 wide foaming nickel as anodal matrix; Cover the inferior nickel of cobalt, calcium oxide, yittrium oxide and polytetrafluoroethylene and mix with parts by weight 90,3,1 and 3 respectively, make positive electrode, the positive electrode that makes is uniformly coated on the 110 wide foaming nickel; Adopt twin rollers evenly to suppress then, obtain the positive plate of long 112mm, wide 44.5mm, thick 0.67mm; Negative pole is selected packet header three moral alloyed powders for use, be coated on it on Niclad after, adopt the slurry stove to make the negative plate of long 145mm, wide 44.5mm, thick 0.27mm; The thick nickel strap of 0.1mm is cut into the lug of certain size, and point is welded in the relevant position of positive plate; Select the thick sulfonated membrane of the precious 0.1mm of German Coud for use, adopt up-coiler that itself and positive plate and negative plate are rolled into battery, put into box hat then; On the lug with electric welding machine spot welding on battery cover, at the groove that rolls out about 2mm from box hat mouth a distance with channelling machine, wait until follow-up sealing then; With parts by weight be 21,11 and 1.5 NaOH, potassium hydroxide and monohydrate lithium hydroxide to be dissolved in parts by weight be in 80 the distilled water, make OH
-Concentration is the electrolyte of 9.5mol/L, gets above-mentioned electrolyte 2.7g and injects in the box hat, seals then, makes the Ni-MH battery with long life.
The useful life of Ni-MH battery is all relevant with the performance of each parts of Ni-MH battery, wherein the useful life of the equal appreciable impact Ni-MH battery of the composition of the formation of positive plate and negative plate and electrolyte and consumption.Among the present invention then emphasis the formation (structure and material) of positive and negative plate and the consumption of electrolyte have been carried out deep discussion, particularly, thereby the length through the lengthening positive plate, the consumption that reduces positive electrode reduce the thickness of positive plate; Thereby the length through the lengthening negative plate, the thickness that increases the consumption control negative plate of negative material remain unchanged; The useful life of improving Ni-MH battery through the consumption that raises electrolyte.
Positive electrode active materials select for use covered one deck hydroxide cobalt cover the inferior nickel of cobalt, the increase of cobalt content can guarantee effective discharge of Ni-MH battery, and then improves discharging efficiency.Further; Among the present invention with the length of positive plate lengthening 10-20mm (the positive plate length behind the lengthening is 110-115mm); Reduce the consumption (being reduced to 8.7-9.0g) of 0.1-0.2g positive electrode when keeping positive plate width constant (44-45mm), thereby the thickness of positive plate is reduced.Above-mentioned adjustment to positive plate can make the efficient of nickel-hydrogen cell charging and discharging in the activation process improve.Well-known to those skilled in the artly be, the efficient of activation process improves and not only helps making full use of of Ni-MH battery capacity, and helps keeping of capacity in its use, also promptly improves the useful life of Ni-MH battery.
On the other hand; Among the present invention with the length of negative plate lengthening 10-20mm (the negative plate length behind the lengthening is 140-150mm); Increase the consumption (8.9-9.4g by original is increased to 10.0-10.6g) of negative material when keeping negative plate width constant (44-45mm), thereby the thickness of control negative plate remains unchanged basically.In the parts of Ni-MH battery, getting in touch of the useful life of negative pole and Ni-MH battery is the closest, and the kind of negative material, the assembling of both positive and negative polarity are than all influencing useful life.In the negative material of the present invention, cobalt content is 6-10%, and manganese content is about 5%; Manganese element can reduce the equilibrium hydrogen pressure of alloy; Cobalt element can delay the consumption of negative material (for example alloyed powder) to electric liquid; Reduce the crystallization of rare earth element, reduce the rising of Ni-MH battery internal resistance, help keeping of battery capacity in the use of Ni-MH battery.In addition; Increase the consumption of negative material in the time of the consumption of downward modulation positive electrode; The thickness of controlling negative plate on the one hand is constant, and the assembling that more importantly makes both positive and negative polarity is than promoting, compared with prior art; The both positive and negative polarity assembling promotes to 90-92% than appropriateness, helps the Ni-MH battery improvement in useful life equally.
The composition of the electrolyte that uses in the Ni-MH battery and consumption influence its useful life equally.The used electrolyte of the present invention is the ternary electrolyte that contains NaOH, potassium hydroxide and monohydrate lithium hydroxide, and its consumption raises 0.2-0.4g significantly, to 2.6-2.8g.The use of NaOH can improve charge efficiency and in the Ni-MH battery use, increase the discharge gram volume in Ni-MH battery quick charge process; The use of monohydrate lithium hydroxide also can improve the charge efficiency of Ni-MH battery; OH in the electrolyte
-The consumption that raises electrolyte under the constant prerequisite of concentration can be so that conductive materials increases, thereby also can improve the charge efficiency of Ni-MH battery.And the raising of charge efficiency helps the Ni-MH battery improvement in useful life.
For the beneficial effect of explaining that more clearly embodiment of the present invention can obtain, through following Comparative Examples, specify manufacture method of the present invention to the improvement in useful life of the conventional Ni-MH battery of AA2200, see table 1 for details.
The conventional Ni-MH battery of AA2200 useful life under the different manufacture methods of table 1
| Different manufacture methods | Conventional method | Modification method |
| 1.0C battery useful life (N) | 180 | 400 |
In the table 1, " modification method " refers to embodiment 1, and " N " representes the circulating cycle number.Can find out from the result of table 1, compare conventional method, among the embodiment 1 the conventional Ni-MH battery of AA2200 useful life from 180 weeks increased to for 400 weeks, increase by 122%, prove absolutely that the present invention is very significant for the effect in the useful life of improving Ni-MH battery.
The conventional Ni-MH battery of embodiment 2:AA2200
The conventional Ni-MH battery of AA2200 belongs to middle high-capacity battery.Positive electrode active materials selects for use gold sky, Hunan to cover the inferior nickel of cobalt; Anodal matrix is selected 110 wide foaming nickel for use; Cover the inferior nickel of cobalt, calcium hydroxide, yittrium oxide and polytetrafluoroethylene and mix with parts by weight 98,2,3 and 2 respectively, make positive electrode, the positive electrode that makes is uniformly coated on the 110 wide foaming nickel; Adopt twin rollers evenly to suppress then, obtain the positive plate of long 115mm, wide 44mm, thick 0.65mm; Negative pole is selected packet header three moral alloyed powders for use, be coated on it on Niclad after, adopt the slurry stove to make the negative plate of long 150mm, wide 44mm, thick 0.25mm; Select the thick sulfonated membrane of the precious 0.12mm of German Coud for use; With parts by weight be 25,10 and 4 NaOH, potassium hydroxide and monohydrate lithium hydroxide to be dissolved in parts by weight be in 100 the membrane filtration pure water, make OH
-Concentration is the electrolyte of 9mol/L, gets above-mentioned electrolyte 2.75g and injects in the box hat, seals then; Other manufacture methods are with embodiment 1.
Table 2 is seen in the improvement in the conventional Ni-MH battery of the 2 couples of AA2200 of embodiment useful life.
The conventional Ni-MH battery of AA2200 useful life under the different manufacture methods of table 2
| Different manufacture methods | Conventional method | Modification method |
| 1.0C battery useful life (N) | 180 | 380 |
In the table 2, " modification method " refers to embodiment 2, and " N " representes the circulating cycle number.Can find out from the result of table 2, compare conventional method, among the embodiment 2 the conventional Ni-MH battery of AA2200 useful life from 180 weeks increased to for 380 weeks, increase by 111%, prove absolutely that the present invention is very significant for the effect in useful life of improving Ni-MH battery.
The conventional Ni-MH battery of embodiment 3:AA2300
The conventional Ni-MH battery of AA2300 belongs to middle high-capacity battery.Positive electrode active materials selects for use gold sky, Hunan to cover the inferior nickel of cobalt; Anodal matrix is selected 110 wide foaming nickel for use; Cover the inferior nickel of cobalt, calcium hydroxide, yttrium hydroxide and polytetrafluoroethylene and mix with parts by weight 80,1,1 and 3 respectively, make positive electrode, the positive electrode that makes is uniformly coated on the 110 wide foaming nickel; Adopt twin rollers evenly to suppress then, obtain the positive plate of long 110mm, wide 45mm, thick 0.7mm; Negative pole is selected packet header three moral alloyed powders for use, be coated on it on Niclad after, adopt the slurry stove to make the negative plate of long 150mm, wide 45mm, thick 0.3mm; Select the thick sulfonated membrane of the precious 0.12mm of German Coud for use; With parts by weight be 20,10 and 5 NaOH, potassium hydroxide and monohydrate lithium hydroxide to be dissolved in parts by weight be in 70 the membrane filtration pure water, make OH
-Concentration is the electrolyte of 9.6mol/L, gets above-mentioned electrolyte 2.8g and injects in the box hat, seals then; Other manufacture methods are with embodiment 1.
Table 3 is seen in the improvement in the conventional Ni-MH battery of the 3 couples of AA2300 of embodiment useful life.
The conventional Ni-MH battery of AA2300 useful life under the different manufacture methods of table 3
| Different manufacture methods | Conventional method | Modification method |
| 1.0C battery useful life (N) | 150 | 300 |
In the table 3, " modification method " refers to embodiment 3, and " N " representes the circulating cycle number.Can find out from the result of table 3, compare conventional method, among the embodiment 3 the conventional Ni-MH battery of AA2300 useful life from 150 weeks increased to for 300 weeks, double, prove absolutely that the present invention is very significant for the effect in useful life of improving Ni-MH battery.
The conventional Ni-MH battery of embodiment 4:AA2300
The conventional Ni-MH battery of AA2300 belongs to the intermediate size battery.Positive electrode active materials selects for use gold sky, Hunan to cover the inferior nickel of cobalt; Anodal matrix is selected 110 wide foaming nickel for use; Cover the inferior nickel of cobalt, calcium oxide, yttrium hydroxide and polytetrafluoroethylene and mix with parts by weight 85,1,1 and 4 respectively, make positive electrode, the positive electrode that makes is uniformly coated on the 110 wide foaming nickel; Adopt twin rollers evenly to suppress then, obtain the positive plate of long 112mm, wide 44mm, thick 0.7mm; Negative pole is selected packet header three moral alloyed powders for use, be coated on it on Niclad after, adopt the slurry stove to make the negative plate of long 141mm, wide 44mm, thick 0.3mm; Select the thick sulfonated membrane of the precious 0.12mm of German Coud for use; With parts by weight be 19.7,20 and 4.2 NaOH, potassium hydroxide and monohydrate lithium hydroxide to be dissolved in parts by weight be in 95 the distilled water, make OH
-Concentration is the electrolyte of 10mol/L, gets above-mentioned electrolyte 2.6g and injects in the box hat, seals then; Other manufacture methods are with embodiment 1.
Table 4 is seen in the improvement in the conventional Ni-MH battery of the 4 couples of AA2300 of embodiment useful life.
The conventional Ni-MH battery of AA2300 useful life under the different manufacture methods of table 4
| Different manufacture methods | Conventional method | Modification method |
| 1.0C battery useful life (N) | 150 | 320 |
In the table 4, " modification method " refers to embodiment 4, and " N " representes the circulating cycle number.Can find out from the result of table 4, compare conventional method, among the embodiment 4 the conventional Ni-MH battery of AA2300 useful life from 150 weeks increased to for 320 weeks, increase by 113%, prove absolutely that the present invention is very significant for the effect in useful life of improving Ni-MH battery.
In above embodiment (embodiment 1-4), can find out that obviously the Ni-MH battery that adopts long-life making nickel hydrogen battery method of the present invention to make significantly increases its useful life.In the foregoing description; Though each embodiment combines dissimilar middle high-capacity battery (AA2200, AA2300) to describe; But use among the embodiment that the method described in the embodiment is not limited in presents, combine to describe; Under the prerequisite that does not deviate from scope of the present invention and spirit, but can be applied to the making of the battery of other ranges of capacity.
Though the present invention describes through specific embodiment, it will be appreciated by those skilled in the art that, without departing from the present invention, can also carry out various conversion and be equal to alternative the present invention.In addition, to particular condition, can make various modifications to the present invention, and not depart from the scope of the present invention.Therefore, the present invention is not limited to determined specific embodiment, and should comprise the whole execution modes that fall in the claim scope of the present invention.
Claims (10)
1. the manufacture method of a long-life Ni-MH battery comprises that anodal making step, negative pole making step, barrier film roll step, electrolyte implantation step and sealing step, it is characterized in that,
Said anodal making step comprises following substep:
A1: positive electrode preparation: positive electrode active materials, additive and binding agent are mixed, make positive electrode;
A2: positive electrode coating: the positive electrode that makes among the step a1 is uniformly coated on the anodal matrix;
A3: anodal compressing tablet: be coated with the anodal matrix of positive electrode among the pressing step a2, made positive plate;
Said negative pole making step comprises following substep:
B1: negative material coating: negative material is uniformly coated on the negative pole matrix;
B2: negative pole compressing tablet: be coated with the negative pole matrix of negative material among the pressing step b1, made negative plate;
Said electrolyte implantation step comprises following substep:
C1: electrolyte quota: alkaline electrolyte is dissolved in the solvent, makes electrolyte;
C2: electrolyte injects: the electrolyte that step c1 is made injects in the shell.
2. the manufacture method of long-life Ni-MH battery according to claim 1; It is characterized in that in said step a1, said positive electrode active materials is for covering the inferior nickel of cobalt; Said additive is the oxide or the hydroxide of calcium constituent and yttrium, and said binding agent is a polytetrafluoroethylene.
3. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, in said step a1, the parts by weight of said positive electrode active materials, additive and binding agent are respectively 80 ~ 98,1 ~ 5 and 2 ~ 4.
4. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, in said step a2, said anodal matrix is foaming nickel.
5. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, in said step a3, the length of said positive plate is 110 ~ 115mm, and the width of said positive plate is 44 ~ 45mm, and the thickness of said positive plate is 0.65 ~ 0.7mm.
6. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, said negative pole making step comprises following substep:
B1: negative material coating: alloyed powder is uniformly coated on the Niclad;
B2: negative pole compressing tablet: be coated with the Niclad of alloyed powder among the pressing step b1, made negative plate.
7. according to the manufacture method of claim 1 or 6 described long-life Ni-MH batteries, it is characterized in that in said step b2, the length of said negative plate is 140 ~ 150mm, the width of said negative plate is 44 ~ 45mm, and the thickness of said negative plate is 0.25 ~ 0.3mm.
8. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, in said step c1, said alkaline electrolyte is the mixture of NaOH, potassium hydroxide and monohydrate lithium hydroxide; Said solvent is distilled water or membrane filtration pure water.
9. the manufacture method of long-life Ni-MH battery according to claim 8; It is characterized in that; In said step c1; Parts by weight are respectively 15 ~ 25,10 ~ 20 and 1 ~ 5 NaOH, potassium hydroxide and monohydrate lithium hydroxide, and to be dissolved in parts by weight be in 70 ~ 100 the distilled water or membrane filtration pure water, makes electrolyte.
10. the manufacture method of long-life Ni-MH battery according to claim 1 is characterized in that, in said step c2, the consumption of electrolyte is 2.6 ~ 2.8g.
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| CN102593535A (en) * | 2012-03-15 | 2012-07-18 | 深圳市倍特力电池有限公司 | Nickel-zinc cell and manufacturing method thereof |
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| CN114171727A (en) * | 2021-10-27 | 2022-03-11 | 深圳市豪鹏科技股份有限公司 | Positive electrode material, positive electrode slurry, positive plate and nickel-metal hydride battery |
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| CN114171727A (en) * | 2021-10-27 | 2022-03-11 | 深圳市豪鹏科技股份有限公司 | Positive electrode material, positive electrode slurry, positive plate and nickel-metal hydride battery |
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| CN102324578B (en) | 2014-04-09 |
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